trouble integrating new hen
- Monkey Lookout
You may wish to consider having multiple feeding stations to reduce the likelihood of fighting over food / water. And yes, the hens will calm down once the light is switched off - not sure why the light is on as once they are roosting they are no longer feeding.
I also put a make-shift barrier on my roost so one area is separate from another - that way, subordinate hens can roost in peace.
If there is no harm being done from squabbles, then i would not worry too much about it. I have read on other threads that one can keep the newbie in a sectioned off part of the run, and introduce just one of your flock for a few days, and see how they get on. There are lots of threads on this subject, so feel free to search for them.
It may take three more weeks but before you know it, it will calm down. I just went through it introducing three new hens to my existing three and a roo. They were pretty relentless, and my newbies were submissive. It took all I had not to interfere (well ok, I did once or twice - they were being soooo mean!!!) and the newbies don't fight back - what's up with that??
I agree with CTKen about separating part of the roost for her. We all know the plusses of a good night's sleep! Good luck!